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112096 |
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|a Murphy, K. D.
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|a MIT Kavli Institute for Astrophysics and Space Research
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|a Nowak, Michael A
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|a Marshall, Herman
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|a Marshall, Herman
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|a Nowak, Michael A.
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|a The Nuclear X-Ray Emission-line Structure in NGC 2992 Revealed by
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|b IOP Publishing,
|c 2017-10-31T15:13:08Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/112096
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|a We present the narrow emission-line structure revealed by a 135 ks Chandra observation of Seyfert galaxy NGC 2992, using the High Energy Transmission Grating Spectrometer. The source was observed in an historically low-flux state. Using a Bayesian Block search technique, we detected neutral Si Kα and S Kα fluorescence and two additional lines that are consistent with redshifted, ionized Si emission. The latter two features are indicative of a photoionized outflow with a velocity of ∼ 2500 km s⁻¹. We also observed prominent, unresolved line emission at the rest energy of Fe Kα, with a 90% confidence FWHM velocity width of < 2000 km s⁻¹ ( < 2800 km s⁻¹) and equivalent width of 406-1148 eV (288-858 eV) when broad Fe Kα line emission, as detected by Suzaku, was (was not) included in the model.
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|a Article
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|t Astrophysical Journal
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